While on study, you will have weekly blood tests (about 2 teaspoons) for the first 3 weeks. After 3 weeks, if you tolerate the study drug well, your blood tests (about 2 teaspoons each time) will be drawn once every 3 weeks, or as often as your physicians feel that they are necessary. Six (6) weeks after your first cycle of study drug, you will undergo x-rays, computed tomography (CT) scans, magnetic resonance imaging (MRI), or PET scans to see how you are responding to the study drug. If the disease shows a response to the study drug or is stable, then future x-rays, CT scans, MRI or PET scans will be performed every 6 weeks, or as often as the physician feels it is necessary. After that, the scans will be performed every 9 weeks, or as often as the physician feels it is necessary. A physical exam, including vital signs (blood pressure, heart rate, temperature, and breathing rate), will be done every 3 weeks and any time the physician feels it is necessary.